Frost Dates for 73737 — Fairview, Oklahoma

Half of springs at Fairview 1W Mesonet, OK see their last 32°F night by April 5; only one in ten is past it by March 20, and one in ten still has one after April 20. Planting tender crops after April 11 leaves a 30% risk of a frost on them, after April 15 20%, and after April 20 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 114 Oklahoma stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 19 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 9 days later, around November 10; in spring the one-in-ten date for 28°F is April 10, 10 days before the 32°F one. The freeze-free season lasts 208 days in a typical year, shorter than at 62% of the 114 Oklahoma stations; it reaches 230 days one year in ten and falls short of 187 one year in ten. On average 89 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 13 days longer, to about April 18, and return around October 23. Severe cold of 16°F or below comes every winter, usually between December 15 and February 21.

July is the warmest month at Fairview 1W Mesonet, OK, averaging 96°F by day and 71°F at night; January is the coldest at 49°F and 26°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 66% of years.

Warmth for growing adds up to 5,061 growing degree days a year (base 50°F), fewer than at 65% of the 114 Oklahoma stations. 37% of them (1,896) have built up by the end of June, and July adds the most, 1,026.

The nearest other station, Watonga, OK, 30 miles south of Fairview and 202 feet higher, has a last frost 9 days later (April 14), a first frost 5 days earlier (October 27), a season 14 days shorter.

The first measurable snow (0.1 inch or more) in Fairview usually arrives around December 13, and the last of the season around February 15. Those are the middle dates across the winters of 1991–2020 at Orienta 1SSW, OK, 5.2 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 49 days after the last snow.

ZIP 73737 is 2 miles from Fairview 1W Mesonet, OK, which stands at 1,328 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 73737 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.